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Finding the Fourth Proportional to 146,154.60, 219,110.40 and 61,979.40

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Solution

The fourth proportional to 146,154.60, 219,110.40 and 61,979.40 is: 92,917.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,154.60 : 219,110.40 = 61,979.40 : x
  2. Step 2: Convert to fraction form
    146,154.60/219,110.40 = 61,979.40/x
  3. Step 3: Cross multiply
    146,154.60x = 219,110.40 × 61,979.40
  4. Step 4: Simplify right side
    146,154.60x = 13,580,331,125.76
  5. Step 5: Solve for x
    x = 13,580,331,125.76/146,154.60
  6. Step 6: Final answer
    x = 92,917.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.